The first graph shows smoothed lines for the record temperatures and the average temperatures. While these are the averages, it should be noted that around here, highs and lows from one day to the next can vary wildly.
This next chart shows monthly extreme highs and lows, as well as the average temperature for the month for the last few years for which we had complete data.
The next chart shows how the last three years deviated from the 1950-1994 average. I used a stock chart to show the record highs and lows by month during 2006-2009 and the bars show which direction the average for 2006-2009 deviated from the 1950-1994 average. Red (up) means that month was warmer than average, blue (down) means it was colder than average. The bar shows the distance the average for that month deviated from the long-term average. If you throw a trendline on this graph, the average temperature is actually going down. However, snow has not recently occurred in months it normally has in the spring and fall.
Finally, a comparison of the precipitation between 2007-2009 and 1950-1994 averages. Interestingly, December has been much snowier than average the last three years and January has been much drier than average. The annual precipitation average for 2007-2009 is 2" above the historic average. Notably, there was a historic average snowfall in May, September, and October that has not recently been achieved.